Dump car



3 Sheets-Sheet 1 T A m W i x 1i 5% ATTORNEY N. s. REEDER DUMP GAR Filed April 9, 1929' INVENTOR DUMP CAR Filed April 9, 1929 3 Sheets-Sheet 2 INVENTOR' Max- ATTORNEY June 24, 1930; 5; REEDER 1,765,700

DUMP CAR Filed April 9, 1.929 3 Sheets-Sheet 3 INVENTOR W J. M

ATTORNEY? Patented June 24, 1930 UNITED STATES PAT 7 NATHANIEL S. REEDER, OF NEW YORK, N. Y., ASSIGNOR TO PRESSED STEEL CAB COM- PANY, OF PITTSBURGH, IPENNSYLVANIA A' CORPORATION-0F NEW JERSEY DUMB GAR Applicationfil ed. April 9, 1929. SeriaI No. 353.704.

7 An object of'my invention is to provide a dump car with a mechanism for automatically and selectively limiting the opening of the discharging door as the body is tilted and returning said door toa closed position as the body is righted.

Another object of my invention is to provide transversely movable armsateach side of the underframe ofa dump car for engaging with the opening door as the body is tilted to limit the opening thereof and to return the door to a closed'position, by causing the door to rotate about its-hinges as the body is righted.

In dump cars of the type illustrated in the drawings, the door operating'mechanism is independent of the door locking mechanism butperform their separate iuncti'ons'si'muL taneously with the, dumping and righting movements of the carbody. The door look ing mechanism' shown in the drawing forms 7 no part of my invention but is merely illuse trative of a preferred form oflocking mechanism. The type of car shownin the drawings is known as the rotary trunnion dump car in which the body is supported directly on the underfrar'ne and rotatesabout the underframe during the first part of the dumping movement untiltrunnions mounted on the sides of the body engage with the u'nderframe after which-the trunnions form pivots about which, the-body turns in completing the dumpingmovement. However, the form of door operating mechanism shown can be used equally as well with a body mounted on trunnions at each side of the underframe and tilting about these trunnions during-the entire dumping movement.

For the same reasons there has not'been shown a mechanism'for tilting the body but anyof the types well known to the prior art may be used such as pressure operated tilting cylinders mounted on the' car underframe or the body may be tilted b any other mechanical means or by manna effort.

Referring now to the drawings, Fig. 1 is a transverse sectionthrough dump car showing the body 1nv load carrying posltlon and the door operating vmechanism; 'Fig' 2 is a transverse section through a dump car showing the body in fully tilted position; Fig. 3 section through the underframe and door operating mechanism along the lines 3-3 of Fig.2; Fig. 4 is a plan view of a portion of the underframe showing a method of mounting the door operating mechanism on the underframe;' Fig. 5 is a section through the underframe and 'door operating mechanism along the lines 5-5 of Fig. 4; Fig. 6 is a detail view of a portion of the door operating mechanism; Fig. 7 isafsection through the underframe and'door operating mechanism taken along the lines 77 of Fig. 4. 1

Referring now indetail to the drawings, reference character lindicates adump car having a body 2 'tiltably mounted on an underframe 3 and tilting to either side of the underfra-me in dumping. vThe walls of the body are formed of doors i hinged adjacent the floor and opening downward to facilitate the discharging of the'lading at the side towards which thebody is dumping. For the purpose of illustrating the door operating mechanism, thesides of the body are shown hinged-and the end walls of the body have been omitted, but it is to be understood that the side walls may be made rigid and the end walls hinged so as to make an end dump car instead of a side dump car. In making an end dump car:the door operating mechanism instead of extending transversely of the underframe, asv shown in "the drawings, I

would extendlongitudinally of the undermembers 5 to control the movementsofthese members, as will later be explained. One

end of the members 5'have suitablyffoinied portions 7 which engage with flsuitably formed portions of the body 'when the body is in horizontal position, as shown in Fig. 1.

and l throughsuch.engagement the body controls the movements of the-door operating i The portion 11 of the guide mechanism has a fiat surface in engagement with the memher 8 and the remainder of the member 11 is of arcate form and is movably mounted within the member 10 so as to permit the member 8 to rotate slightly within the guide member 10 in controlling the movement of the discharging door. The lower portion 12 of the guide member 10 is rigidly attached to the guide member,-but has the portion in engagement with the member 8 of an arcate form for the same reason as above. r

Since the door operating mechanism, as

shown and described, is out of engagement with the doors of the body when the body is in load transporting position, it isnecessary that an additional mechanism be provided for holding-the doors in closed position. The mechanism as shown in the drawings automatically engages with the doors when the doors are returned to aclosed'position by the door operatingimechanism. simultaneously with'the righting of the body after dumping and automatically releases the dis charging door for opening as the body begins to tilt While maintaining the remaining "door closed throughout the dumping movement.

V WVhen the body is in horizontal position,

I as shown in Fig. 1, and it is desired to discharge the contents thereof to the right side ofthe car as shown in Fig. 2, the following 7 action takes place-:The body tilting mechanism,-tilts the body towards the right hand side of the underframe and thedoor locking 5O mechanism, simultaneously with the tilting action,'releases the'right hand door so that the door will 7 open by gravity and the weight of the lading being discharged. The downward depending portion 13 of the door engageswith the portion 9 of the transverse arm.8 of the door operating mechanism and,

remains in contact with this member throughout the entire dumping movement. The members amounted on opposite sides .of theunderframe, andin engagement with the. body when the body is horizontal, pass.

Out of engagement .with the body at theleitt Qside'of the underframe as the'leit't side of the body moves away from the underframe and the members 5 on the .right side of the body are moved downward towards the right side of the underframe by their en-' gagement with the body and through their connection by means of the member 6 causing the mechanism at both sides of the body to move simultaneously. The arm 8 having the portion 9 thereof in engagement with the side door moves inwardly as the body tilts and the portion 9 in engagement with the depending portion 13 of the door follows the movement of that portion and as the body reaches its extreme dumping position limits the further opening of the door as is shown in Fig. 2.

It will be noted in Fig. 2 that'the portion 9 is maintained in engagement with the door by the rotation of the door on its hinges and should the door strike an obstruction at the side of the track .during any part of the door to a closed position before the body comes to rest on the underframe, by causing the door to rotate about its hinges as the body is righted- The member 8 on the left side or" theibody is also moved by its connection tothe member 6 into a position to engage with the returning body. Since the door operating mechanism, passes out of engagement with the doors. a short time before the body comesto rest on the, underframe, the door locking mechanism must of necessity engage with the doors and lock them intoclosed position as the body comes to rest on the underframe with the door operating mechanism in the shown in Fig. 1 of the drawing.

7 When the body is tilted towards theleft side of the underframe, the action of the position as door operating mechanism is the same as previously described excepting that the members 5. on the left side or the underframe are the members which control the movement of the door operating mechanism and thedoor at the left side of the under- I frame opens by gravity as the body is'tilted and is rotated into a closed position as the bodyisrighted as previously described.

Neither the action nor construction of the doorlocking-mechanism, or the portions of the car. body and underframe about which the body tilts have been described in detail since these form no part of the present in vention.- 1 r 1 members. 1

Throughout the description theinactive door operating mechanism has been described as moving simultaneously with the active mechanism, by means of the connecting member 6, but it isto be understood that the member 6 may be omitted and any other suitable means may be used for maintaining the inactive members 5 in position to enwith said body and depending door mem ers to control the opening and closing of the side doors as the body moves in dumping, said mechanism comprising a member mounted on each side of the underframe and controlled by the body tilting toward said members, a member mounted on each side of said underframe ad acent the depending door members and movable into. and.

out of engagement therewith, and means connectlng the ad acent underframe mounted 2. In a dump car, anunderfrarne, a dump body supported directly on saidunderframe in stable equilibrium, side doors for said body hinged adjacent the floor thereof, downward depending members on said door, a door operating mechanism mounted on the underframe for automatically and selectively controllingthe opening andclosing movements of the door at the side towards which the body is dumping, said mechanism comprising a member in engagement with the tilting body, a member movable transversely of the underframe into'engagement with the wdepending member of the' descending door and a connection between said-members.

3. In a dump car, an underframe, a dump body tiltably mounted on said underframe in stable equilibrium, side doors for said body hinged 'a djacentthe floor thereof and folding down in opening, downward depending members on said doors, a door operating mechanism for automatically controlling the opening and closing of the discharging door of the tilting body, said; mechanism comprising a membermounted on the 'underframe and controlled by the tilting body, a -member mountedho'n the underframe and movable transversely thereof to engage with theadjacent opening door and meansconnecting said members. I c 4. In a dump car, an 'underframe, a dump body tiltably mounted on said underframe in stable equilibrium, trunnions on said body,

free; of 1 the underframa when the body is I horizontah said trunnions engaging with the e underframewhen the body is tilt'ed and,

formingipivots about which the" bodyturns in dumpingfside doors fo'r said body hinged I 1 adjacent the floorthe'reof,- a member mounted 0nthe underframe and actuated bythe duinping car body, a member mounted-on the 1 underframeand movable transversely thereof to engage with-the adjacent opening;

door :and' a connection between said mem- 'bers.

5. In a dump car, an underframe, a dump body mounted on said underframe in stable equilibrium, side doors for said body hinged adjacent the floor thereof, downward depending members 'on said doors, a member mounted on each side of the underframe ad- 'acent said depending door member, a memer mounted on each side of the underframe adjacent saidfirst. mentioned member and in engagement with the body, and means extending transversely of the underframe and .in engagement with said members, said first mentioned members movable transversely of the underframe to engage with the adjacent depending member of the opening door'as the body moves in dumping.

6. In a dump car, an underframe, a dump bodysupported directly on said underframe in stable equilibrium, side doors for said body hinged adjacent the floor thereof, downward depending members on said doors, a member mountedon each side of the underframe adjacent the depending door members, said member being movable trans versely of the underframe to engage with the depending members of the adjacent openingdoor as the body is tilted, and means mountedv on the 'underframe and having aselect-iveengagement with the body to control the movement of said transversely mounted members.

7 In adump car, an underframe, a dump body tiltably mounted on said underframe in stable equilibrium, side. doors for said downward depending members on said doors, a member mounted at each side of the I transversely I thereof, a member mounted on the under-. frame andhaving a selective engagement underframe and movable with the body, means connecting said'mem- 'bers, a member mounted on said first men'- tioned member and movable longitudinally of the adjacent depending door member when the body tilts towards their respective sides; I I

8. In a dump car, an underframe, a dump body tiltably mounted on said underframein stable equilibrium, side doors for said downward depending members on said doors, a door operating mechanismon each side of the underframe adjacent the dependbody hinged" adjacent the floor thereof, I

' bodyv hinged adjacent the floor thereof, I

ing door members for controlling the opening and closing movements of said doors,

o operating 'mechanism into engagementwwith the depending members of the adjacent 0pening door as the body tilts indumping.

NATHANIEL siREED R. 

